I would venture to say they have less btu's. During the mfg process the volatile oils are evaporated off due to the high heat generated during the compressing process. That's why they burn so clean. Love the way they burn clean.
I geek thought just came in...
Hand held seed planter. Has a rotating dial that "clicks". As it clicks it vibrates the seeds forward to the end of the gizmo. Now to make one that delivers pellets slowly to the fire box
share your ideas